Home / 281,313,243.18-388,207,137.42-155,864,981.52

Finding the Fourth Proportional to 281,313,243.18, 388,207,137.42 and 155,864,981.52

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Solution

The fourth proportional to 281,313,243.18, 388,207,137.42 and 155,864,981.52 is: 215,090,827.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,313,243.18 : 388,207,137.42 = 155,864,981.52 : x
  2. Step 2: Convert to fraction form
    281,313,243.18/388,207,137.42 = 155,864,981.52/x
  3. Step 3: Cross multiply
    281,313,243.18x = 388,207,137.42 × 155,864,981.52
  4. Step 4: Simplify right side
    281,313,243.18x = 60,507,898,299,900,408
  5. Step 5: Solve for x
    x = 60,507,898,299,900,408/281,313,243.18
  6. Step 6: Final answer
    x = 215,090,827.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.